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-rw-r--r--lib/Basic/SourceManager.cpp123
1 files changed, 33 insertions, 90 deletions
diff --git a/lib/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index ac2fe3d69e..f0a0d4c1bb 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -22,7 +22,6 @@
#include <algorithm>
#include <string>
#include <cstring>
-#include <cstdio>
using namespace clang;
using namespace SrcMgr;
@@ -32,75 +31,6 @@ using llvm::MemoryBuffer;
// SourceManager Helper Classes
//===----------------------------------------------------------------------===//
-struct BufferResult::FailureData {
- const llvm::MemoryBuffer *Buffer;
- const char *FileName;
- std::string ErrorStr;
-};
-
-BufferResult::BufferResult(const BufferResult &Other) {
- if (const llvm::MemoryBuffer *Buffer
- = Other.Data.dyn_cast<const llvm::MemoryBuffer *>()) {
- Data = Buffer;
- return;
- }
-
- Data = new FailureData(*Other.Data.get<FailureData *>());
-}
-
-BufferResult::BufferResult(const char *FileName, llvm::StringRef ErrorStr,
- const llvm::MemoryBuffer *Buffer) {
- FailureData *FD = new FailureData;
- FD->FileName = FileName;
- FD->ErrorStr = ErrorStr;
- FD->Buffer = Buffer;
- Data = FD;
-}
-
-BufferResult::~BufferResult() {
- if (FailureData *FD = Data.dyn_cast<FailureData *>())
- delete FD;
-}
-
-bool BufferResult::isInvalid() const {
- return Data.is<FailureData *>();
-}
-
-const llvm::MemoryBuffer *BufferResult::getBuffer(Diagnostic &Diags) const {
- llvm::StringRef FileName;
- std::string ErrorMsg;
- const llvm::MemoryBuffer *Result = getBuffer(FileName, ErrorMsg);
- if (!ErrorMsg.empty()) {
- Diags.Report(diag::err_cannot_open_file)
- << FileName << ErrorMsg;
- }
- return Result;
-}
-
-const llvm::MemoryBuffer *BufferResult::getBuffer(llvm::StringRef &FileName,
- std::string &Error) const {
- if (const llvm::MemoryBuffer *Buffer
- = Data.dyn_cast<const llvm::MemoryBuffer *>())
- return Buffer;
-
- FailureData *Fail = Data.get<FailureData *>();
- FileName = Fail->FileName;
- Error = Fail->ErrorStr;
- return Fail->Buffer;
-}
-
-BufferResult::operator const llvm::MemoryBuffer *() const {
- llvm::StringRef FileName;
- std::string ErrorMsg;
- const llvm::MemoryBuffer *Result = getBuffer(FileName, ErrorMsg);
- if (!ErrorMsg.empty()) {
- fprintf(stderr, "error: cannot open file '%s': %s\n",
- FileName.str().c_str(), ErrorMsg.c_str());
- }
-
- return Result;
-}
-
ContentCache::~ContentCache() {
delete Buffer;
}
@@ -128,7 +58,11 @@ void ContentCache::replaceBuffer(const llvm::MemoryBuffer *B) {
Buffer = B;
}
-BufferResult ContentCache::getBuffer() const {
+const llvm::MemoryBuffer *ContentCache::getBuffer(Diagnostic &Diag,
+ bool *Invalid) const {
+ if (Invalid)
+ *Invalid = false;
+
// Lazily create the Buffer for ContentCaches that wrap files.
if (!Buffer && Entry) {
std::string ErrorStr;
@@ -152,17 +86,23 @@ BufferResult ContentCache::getBuffer() const {
char *Ptr = const_cast<char*>(Buffer->getBufferStart());
for (unsigned i = 0, e = Entry->getSize(); i != e; ++i)
Ptr[i] = FillStr[i % FillStr.size()];
- return BufferResult(Entry->getName(), ErrorStr, Buffer);
+ Diag.Report(diag::err_cannot_open_file)
+ << Entry->getName() << ErrorStr;
+ if (Invalid)
+ *Invalid = true;
} else {
// Check that the file's size and modification time is the same as
// in the file entry (which may have come from a stat cache).
- // FIXME: Make these strings localizable.
if (FileInfo.st_size != Entry->getSize()) {
- ErrorStr = "file has changed size since it was originally read";
- return BufferResult(Entry->getName(), ErrorStr, Buffer);
+ Diag.Report(diag::err_file_size_changed)
+ << Entry->getName() << (unsigned)Entry->getSize()
+ << (unsigned)FileInfo.st_size;
+ if (Invalid)
+ *Invalid = true;
} else if (FileInfo.st_mtime != Entry->getModificationTime()) {
- ErrorStr = "file has been modified since it was originally read";
- return BufferResult(Entry->getName(), ErrorStr, Buffer);
+ Diag.Report(diag::err_file_modified) << Entry->getName();
+ if (Invalid)
+ *Invalid = true;
}
}
}
@@ -516,10 +456,11 @@ SourceLocation SourceManager::createInstantiationLoc(SourceLocation SpellingLoc,
return SourceLocation::getMacroLoc(NextOffset-(TokLength+1));
}
-BufferResult SourceManager::getMemoryBufferForFile(const FileEntry *File) {
+const llvm::MemoryBuffer *
+SourceManager::getMemoryBufferForFile(const FileEntry *File) {
const SrcMgr::ContentCache *IR = getOrCreateContentCache(File);
assert(IR && "getOrCreateContentCache() cannot return NULL");
- return IR->getBuffer();
+ return IR->getBuffer(Diag);
}
bool SourceManager::overrideFileContents(const FileEntry *SourceFile,
@@ -537,7 +478,7 @@ SourceManager::getBufferData(FileID FID, bool *Invalid) const {
if (Invalid)
*Invalid = false;
- const llvm::MemoryBuffer *Buf = getBuffer(FID).getBuffer(Diag);
+ const llvm::MemoryBuffer *Buf = getBuffer(FID);
if (!Buf) {
if (*Invalid)
*Invalid = true;
@@ -767,7 +708,7 @@ const char *SourceManager::getCharacterData(SourceLocation SL) const {
// Note that calling 'getBuffer()' may lazily page in a source file.
return getSLocEntry(LocInfo.first).getFile().getContentCache()
- ->getBuffer()->getBufferStart() + LocInfo.second;
+ ->getBuffer(Diag)->getBufferStart() + LocInfo.second;
}
@@ -796,11 +737,13 @@ unsigned SourceManager::getInstantiationColumnNumber(SourceLocation Loc) const {
-static DISABLE_INLINE void ComputeLineNumbers(ContentCache* FI,
+static DISABLE_INLINE void ComputeLineNumbers(Diagnostic &Diag,
+ ContentCache* FI,
llvm::BumpPtrAllocator &Alloc);
-static void ComputeLineNumbers(ContentCache* FI, llvm::BumpPtrAllocator &Alloc){
+static void ComputeLineNumbers(Diagnostic &Diag, ContentCache* FI,
+ llvm::BumpPtrAllocator &Alloc){
// Note that calling 'getBuffer()' may lazily page in the file.
- const MemoryBuffer *Buffer = FI->getBuffer();
+ const MemoryBuffer *Buffer = FI->getBuffer(Diag);
// Find the file offsets of all of the *physical* source lines. This does
// not look at trigraphs, escaped newlines, or anything else tricky.
@@ -857,7 +800,7 @@ unsigned SourceManager::getLineNumber(FileID FID, unsigned FilePos) const {
// If this is the first use of line information for this buffer, compute the
/// SourceLineCache for it on demand.
if (Content->SourceLineCache == 0)
- ComputeLineNumbers(Content, ContentCacheAlloc);
+ ComputeLineNumbers(Diag, Content, ContentCacheAlloc);
// Okay, we know we have a line number table. Do a binary search to find the
// line number that this character position lands on.
@@ -1015,7 +958,7 @@ PresumedLoc SourceManager::getPresumedLoc(SourceLocation Loc) const {
// before the MemBuffer as this will avoid unnecessarily paging in the
// MemBuffer.
const char *Filename =
- C->Entry ? C->Entry->getName() : C->getBuffer()->getBufferIdentifier();
+ C->Entry ? C->Entry->getName() : C->getBuffer(Diag)->getBufferIdentifier();
unsigned LineNo = getLineNumber(LocInfo.first, LocInfo.second);
unsigned ColNo = getColumnNumber(LocInfo.first, LocInfo.second);
SourceLocation IncludeLoc = FI.getIncludeLoc();
@@ -1072,7 +1015,7 @@ SourceLocation SourceManager::getLocation(const FileEntry *SourceFile,
// If this is the first use of line information for this buffer, compute the
/// SourceLineCache for it on demand.
if (Content->SourceLineCache == 0)
- ComputeLineNumbers(Content, ContentCacheAlloc);
+ ComputeLineNumbers(Diag, Content, ContentCacheAlloc);
// Find the first file ID that corresponds to the given file.
FileID FirstFID;
@@ -1101,15 +1044,15 @@ SourceLocation SourceManager::getLocation(const FileEntry *SourceFile,
return SourceLocation();
if (Line > Content->NumLines) {
- unsigned Size = Content->getBuffer()->getBufferSize();
+ unsigned Size = Content->getBuffer(Diag)->getBufferSize();
if (Size > 0)
--Size;
return getLocForStartOfFile(FirstFID).getFileLocWithOffset(Size);
}
unsigned FilePos = Content->SourceLineCache[Line - 1];
- const char *Buf = Content->getBuffer()->getBufferStart() + FilePos;
- unsigned BufLength = Content->getBuffer()->getBufferEnd() - Buf;
+ const char *Buf = Content->getBuffer(Diag)->getBufferStart() + FilePos;
+ unsigned BufLength = Content->getBuffer(Diag)->getBufferEnd() - Buf;
unsigned i = 0;
// Check that the given column is valid.
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-05-01 01:26:14 +0000